The NH-016 Wire and Cable Fire Resistance Tester (Cable Circuit Integrity Testing Chamber) is a state-of-the-art laboratory testing system engineered to evaluate the circuit integrity of electric, data, and optical fiber cables under high-temperature flame, mechanical shock, and water spray conditions. It strictly complies with BS 6387:2013 (Protocols C, W, Z), IEC 60331-1/2/3/21/23/25, BS 8491, BS 8436, EN 50200, and GB/T 19216 standards.
Featuring a spacious 3.0 m × 3.0 m × 3.0 m 304 stainless steel test chamber lined with 700°C fireproof insulation, dual high-precision ribbon burners (including a 610mm BS 6387 burner), an imported mass flow gas control system, and a 3-phase 5-circuit transformer with 0–1000V adjustable voltage load, this advanced Circuit Integrity Testing Equipment provides authoritative compliance data for cable manufacturers, power grid inspection bodies, construction safety authorities, and third-party testing laboratories worldwide.
Wire & Cable Fire Resistance Test Machine Compliance & Standards
This circuit integrity test system enables certified labs to execute comprehensive fire resistance, shock, and water jet assessments across global cable standards:
| Standard Code |
Standard Title & Scope |
Primary Testing Application |
| BS 6387:2013 |
Test method for resistance to fire of cables required to maintain circuit integrity under fire conditions (Protocols C, W, Z) |
British benchmark for fire alone (950°C), fire with water spray, and fire with mechanical shock testing |
| IEC 60331-1 / 2 / 3 / 21 / 23 / 25 |
Tests for electric and optical fiber cables under fire conditions — Circuit integrity (Power, Data, Optical) |
International standard series for electric power, control, data, and fiber optic cable circuit integrity under flame and shock |
| BS 8491 & BS 8436 |
Assessment of fire integrity for large diameter power cables & 300/500V screened multi-core building cables |
Evaluation of fire, shock, and water jet resistance for critical infrastructure and building emergency systems |
| EN 50200 / GB/T 19216.21~25 |
Fire resistance testing for small unprotected cables & Mandatory Chinese national standard series |
European and Chinese national compliance testing for emergency circuit wiring and small diameter cables |
| AS/NZS 3013 |
Electrical installations — Classification of fire and mechanical performance of wiring system components |
Australian/New Zealand wiring safety classification under extreme thermal and mechanical impact conditions |
Technological Features of NH-016 Cable Circuit Integrity Test Machine
- Insulated 3m × 3m × 3m Full-Scale Chamber: Constructed with a durable 304 stainless steel outer shell and 700°C high-temperature resistant internal thermal board. Includes a 750°C fireproof glass observation window and high-temperature sealant joints.
- Dual Specialized Burner Assemblies: Features a 500mm burner with staggered triple-row nozzles for IEC 60331 testing, plus a dedicated 610mm propane ribbon burner specifically designed for BS 6387 Protocol C (950°C flame exposure).
- Imported Mass Flow Controllers & Gas Precision: Employs high-accuracy mass flow meters and dual 0.1 MPa pressure regulators with Venturi gas/air mixers, maintaining precise, pulse-free flame temperature control between 600°C and 1000°C.
- 3-Phase 5-Circuit Electrical Load System: Equipped with a 5 kW transformer supporting 0–1000V adjustable test voltage and 0.1–3A current per circuit. Features fuses (2A), adjustable resistors, ammeters, and short-circuit auto-alarm protections.
- Intelligent Auto-Control & Multi-Parameter Alarming: Real-time K-type thermocouples capture flame temperature curves on the touchscreen display. Automatically cuts off gas supply, sounds alarms, and logs test results upon cable short-circuit or timer completion.
Technical Specifications of Cable Fire Resistance Test Apparatus
| Governing Test Standards |
BS 6387:2013, IEC 60331-1/2/3/21/23/25, BS 8491, BS 8436, EN 50200, GB/T 19216.21~25, AS/NZS 3013 |
| Chamber Dimensions & Shell |
3.0 m (L) × 3.0 m (W) × 3.0 m (H); 304 Stainless Steel with 700°C interior fireproof lining |
| Flame Burner Assemblies |
• 500 mm nozzle burner (1.32 mm hole radius, 3.2 mm spacing)
• 610 mm BS 6387 Protocol C ribbon propane burner with Venturi mixer |
| Flame Temperature Range |
600°C – 1000°C adjustable (Grade A: 650°C, Grade B: 750°C, Grades C/D: 950°C); 1.5mm K-type sensors |
| Test Power Transformer & Load |
3-phase transformer, 5 kW; Voltage: 0–1000V adjustable; Current: 0.1–3A across 5 independent circuits |
| Gas & Airflow Regulation |
Imported Mass Flow Controllers (MFC); 0.1 MPa dual pressure-reducing valves |
| Control Unit & Timer |
PLC with touch screen display; Timer: 0–99 h 99 min 99 s; Automatic short-circuit trip & flameout alarm |
| Control Cabinet Dimensions |
650 mm (D) × 400 mm (W) × 1200 mm (H) |
System Architecture & Testing Workflow of NH-016 Fire Resistance Test Machine
Standardized Testing Workflow:
- Mount the sample cable onto the stainless steel ladder support and secure it using the 150mm metal rings.
- Connect the cable conductors to the 5-circuit electrical transformer load system and set the target test voltage (up to 1000V).
- Position the mobile ribbon burner at the specified distance (40–60 mm horizontally, 100–120 mm vertically) from the specimen.
- Select the flame protocol (e.g., BS 6387 Protocol C at 950°C) and initiate high-voltage electronic spark ignition.
- The PLC tracks real-time current and temperature; if a conductor short-circuits or breaks circuit integrity, the system logs the failure time and triggers safety shut-off.
Target Customer Applications:
- Fire-resistant power cable, communication line, and optical fiber cable manufacturers.
- Third-party electrical product inspection centers and international marine/rail certification bodies.
- Power utility companies, metro infrastructure engineering agencies, and industrial R&D centers.
NH-016 Cable Fire Resistance Test Machine FAQ
Q1: What is the main difference between BS 6387 Protocol C and IEC 60331 tests?
A: BS 6387 Protocol C subjects the cable to a higher flame temperature of 950°C ± 40°C using a 610mm ribbon burner for 180 minutes, whereas standard IEC 60331-21 tests typically apply a 750°C to 830°C flame. The NH-016 includes specialized burners to perform both tests seamlessly.
Q2: How does the system handle cable short-circuit events during high-voltage loading?
A: Each of the 5 testing circuits is equipped with an independent fuse (2A) and circuit protection. When a cable insulation fails and causes a short-circuit, the system immediately cuts power to the affected channel, sounds an audible alarm, and records the exact time of breakdown.
Q3: Is the chamber suitable for water spray and mechanical shock testing?
A: Yes. The heavy-duty 304 stainless steel rack and chamber structure are engineered with high load capacity and drainage considerations, accommodating auxiliary water spray nozzles and mechanical shock impact hammers required by BS 6387 Protocols W & Z and BS 8491.
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